CN102173085B - Method and device for extrusion molding and explosion-proof relief of sensitive materials - Google Patents
Method and device for extrusion molding and explosion-proof relief of sensitive materials Download PDFInfo
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- CN102173085B CN102173085B CN 201110035916 CN201110035916A CN102173085B CN 102173085 B CN102173085 B CN 102173085B CN 201110035916 CN201110035916 CN 201110035916 CN 201110035916 A CN201110035916 A CN 201110035916A CN 102173085 B CN102173085 B CN 102173085B
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Abstract
The invention relates to a method and device for extrusion molding and explosion-proof relief of sensitive materials, belonging to the technical field of extrusion molding processing. In the method, the whole or part of a machine barrel of a screw extruder is of an open type structure, a hydraulic driving system is used for driving the open type machine barrel to open and close, and the machine barrel can be rapidly opened to achieve the purpose of explosion-proof relief when process parameters of pressure, temperature, torsion torque or rotational speed achieve alarm values through a matching on-line measuring and controlling system; and the explosion-proof relief device comprises the open type machine barrel, the hydraulic driving system and the on-line measuring and controlling system,and is applied in the screw extruder. By adopting the method and the device, the situations of a plurality of the process parameters of the screw extruder during the operation process can be detectedin an on-line manner, when the detected process parameters exceed the set alarm values, the machine barrel of the screw extruder can be rapidly opened for preventing explosion and other dangerous accidents, thereby ensuring stable and safe operation of the screw extruder; and the method and the device are applicable to extrusion molding processing of the special sensitive materials, such as heat-sensitive plastic, gunpowder, explosives and the like.
Description
Technical field
The present invention relates to a kind of sensitive material extrusion molding explosion-proof relief method and device, belong to the extrusion molding processing technique field.
Background technology
Along with the development of various visualization techniques, online and offline inspection technology, extrusion molding processing develops towards automation, serialization, security and high-quality direction.In extrusion molding process scale suitability for industrialized production, for the extrusion molding processing of these special sensitive materials such as thermal sensitivity plastics, gunpowder, explosive, security is extremely important.In the extrusion molding process of these special sensitive materials, in extruder barrel, material is in air-tight state, and the influence that extraneous hard impurity enters, processing temperature, load or screw speed surpass many-sided factors such as the process stipulation upper limit is all very likely explosion caused.Some blast is finished instantaneous.Because there is from slow to fast the progressively process of accumulation in the material thermal decomposition, shuts down back some blast of certain hour at extruder and also can take place.
The processing object of conventional extrusion equipment is plastics, and is dangerous little, accident such as generally can not blast, so these equipment often do not possess corresponding explosion prevention function yet.For these sensitive materials are processed in safe extrusion molding, just need the special explosion-proof relief device of exploitation.With reinforcement the security of process is estimated, accomplished just in time to detect or capture certain dangerous information before accident, taking urgent measure returns to normally state of the art, produces and is continued; Even if difficulty is avoided having an accident, also can reduce the accident occurrence degree, ensure post personnel's personal safety, reduce causality loss.
Venting of dust explosion mode commonly used is in the machine case part weak link to be set, and this weak part is at first broken through when blasting accident, plays the venting of dust explosion effect.But, be difficult to hold this method in practice.If the housing design is too weak, very easily deform in process of production, mainly be that intracavity diameter becomes big and housing is scrapped; If thickness of shell is excessive, just do not have the venting of dust explosion effect, cause dangerous generation.Therefore, be necessary to study the explosion-proof relief method and apparatus of the extrusion molding process of sensitive material.
Summary of the invention
The objective of the invention is the safety processing at special sensitive material extrusion molding process such as thermal sensitivity plastics, gunpowder, explosive, prevent the generation of dangerous accidents such as exploding, propose a kind of sensitive material extrusion molding explosion-proof relief method and device.
The objective of the invention is to be achieved through the following technical solutions.
A kind of sensitive material extrusion molding explosion-proof relief method of the present invention, screw extruder barrel adopts the open-type structure in whole or in part in this method, folding by hydraulic drive system drives open-type machine barrel, by the online monitoring method system that matches with it, realize when pressure, temperature, moment of torsion or rotating speed technological parameter reach early warning value, machine barrel can be opened rapidly, reach the purpose of explosion-proof relief.
A kind of sensitive material extrusion molding explosion-proof relief device of the present invention comprises open-type machine barrel, fluid power system and online monitoring method system, is applied to screw extruder; Wherein, fluid power system comprises hydraulic cylinder, push rod, support system and oil piping system, support system comprises support column, gripper shoe and clamp nut, the open-type machine barrel comprises open-type machine barrel lower part and open-type machine barrel top, hydraulic cylinder bottom hydraulic fluid port is arranged in the bottom of hydraulic cylinder, at the side of hydraulic cylinder hydraulic cylinder side hydraulic fluid port is arranged; Piston is arranged in hydraulic cylinder, and oil piping system comprises oil pump, drive motors and oil pipeline; Support column is fixedlyed connected by clamp nut with gripper shoe;
Hydraulic cylinder is fixed by support system, and the piston of push rod one end is driven and can be moved up and down in hydraulic cylinder by oil piping system, and the push rod other end is connected with the open-type machine barrel; When screw extruder was worked, the hydraulic drive system drives push rod compressed open-type machine barrel lower part and open-type machine barrel top in two sub-sections with the pressure of setting, and prevents material from leakage, guaranteed the normal operation of extrusion molding processing; Open-type machine barrel lower part and open-type machine barrel top contact plane in two sub-sections requires enough smooth, avoids material from leakage; Hydraulic cylinder can have one or more, all be arranged on the top of open-type machine barrel, push rod connects with open-type machine barrel top, and open-type machine barrel lower part is fixed, push rod can drive moving up and down of open-type machine barrel top, thereby realizes the folding of open-type machine barrel; Hydraulic cylinder also can have even number, be symmetricly set on the upper and lower of open-type machine barrel respectively, the hydraulic cylinder of top and push rod drive the movement on open-type machine barrel top, and following hydraulic cylinder and push rod drive the movement of open-type machine barrel lower part, thereby realize the folding of open-type machine barrel;
The online monitoring method system comprises sensor, input-output system and controller; Sensor can be pressure sensor, temperature sensor, torque sensor, velocity sensor, pressure sensor is used for the pressure signal of online real-time detection machine barrel, temperature sensor is used for the temperature signal of online real-time detection material or machine barrel, torque sensor is used for the torque of online real-time detection screw extruder screw rod, and velocity sensor is used for the speed of online real-time detection screw extruder screw rod; Controller has by the signal of input-output system receiving sensor and gives the function that fluid power system is sent instruction, operating personnel can arrange pressure respectively by controller, temperature, moment of torsion, the early warning value of rate signal, in the extrusion molding process, when the value of certain detection signal exceeds early warning value, controller sends instruction, when screw extruder is shut down, fluid power system work, drive push rod pulling open-type machine barrel, open-type machine barrel lower part is separated rapidly in two sub-sections with open-type machine barrel top, thereby reach the purpose of explosion-proof relief, avoid the generation of peril; Oil piping system and online monitoring method system keep apart by the threaded extruder of divider wall, the reinforced of screw extruder all is to finish by automatic feeding system, therefore can prevent that the blast of screw extruder from causing that continuous explosion accident takes place oil piping system again, ensure operation and monitor staff's personal safety simultaneously, oil pipeline adopts explosion-proof lamp;
Above-mentioned sensitive material extrusion molding explosion-proof relief method and device can be used for the whole machine barrel of screw extruder, also can be used for the segment section of segmentation machine barrel.
Beneficial effect
The present invention can on-line implement detects a plurality of technological parameter situations in the screw extruder running, when the technological parameter that detects exceeds the early warning value of setting, can realize the rapid unlatching of screw extruder barrel, prevent the generation of perils such as exploding, guarantee the stability and safety operation of screw extruder; Be particularly useful for the extrusion molding processing of special sensitive material such as thermal sensitivity plastics, gunpowder, explosive.
Description of drawings
Fig. 1 is the front view of the embodiment of the invention;
Fig. 2 is the side view of the embodiment of the invention;
Wherein, 1-open-type machine barrel, 1-1-open-type machine barrel lower part, 1-2-open-type machine barrel top, the difunctional sensor of 2-pressure and temp, 3-support column, the 4-gripper shoe, 5-clamp nut, 6-hydraulic cylinder, 7-hydraulic cylinder bottom hydraulic fluid port, 8-hydraulic cylinder side hydraulic fluid port, 9-piston, the 10-push rod, 11-screw extruder, 12-divider wall, 13-online monitoring method system, the 14-oil piping system.
The specific embodiment
The present invention will be further described below in conjunction with drawings and Examples.
Embodiment
The machine barrel explosion-proof relief method of double screw extruder, the whole open-type structure that adopts of double screw extruder machine barrel in this method, folding by hydraulic drive system drives open-type machine barrel, by the online monitoring method system that matches with it, realize when pressure, temperature, moment of torsion or rotating speed technological parameter reach early warning value, machine barrel can be opened rapidly, reach the purpose of explosion-proof relief.
Realize the device of the machine barrel explosion-proof relief method of above-mentioned double screw extruder, comprise open-type machine barrel 1, fluid power system and online monitoring method system 13, be used for the whole machine barrel of double screw extruder 11; Wherein, fluid power system comprises hydraulic cylinder 6, push rod 10, support system and oil piping system 14, support system comprises support column 3, gripper shoe 4 and clamp nut 5, open-type machine barrel 1 comprises open-type machine barrel lower part 1-1 and open-type machine barrel top 1-2, hydraulic cylinder bottom hydraulic fluid port 7 is arranged in the bottom of hydraulic cylinder 6, at the side of hydraulic cylinder 6 hydraulic cylinder side hydraulic fluid port 8 is arranged; Piston 9 is arranged in hydraulic cylinder 6, and oil piping system 14 comprises oil pump, drive motors and oil pipeline; Support column 3 is fixedlyed connected by clamp nut 5 with gripper shoe 4;
Online monitoring method system 13 comprises sensor, input-output system and controller; What sensor adopted is the difunctional sensor 2 of pressure and temp, is used for the pressure and temperature signal of online real-time detection machine barrel; Also have torque sensor and velocity sensor, be separately positioned on screw rod 11 drive shaft end, be respectively applied to moment of torsion and the speed of online real-time detection double screw extruder screw rod 11; Controller has by the signal of input-output system receiving sensor and gives the function that fluid power system is sent instruction, and operating personnel can arrange the early warning value of pressure, temperature, moment of torsion, rate signal by controller respectively; In the extrusion molding process, when the value of certain detection signal exceeds early warning value, controller sends instruction, when double screw extruder is shut down, and fluid power system work, the control oil pump makes hydraulic oil enter hydraulic cylinder 6 by hydraulic cylinder side hydraulic fluid port 8, promote piston 9 and drive push rod 10 motions, thereby pulling open-type machine barrel 1 separates two parts of open-type machine barrel lower part 1-1 and open-type machine barrel top 1-2 rapidly, thereby reach the purpose of explosion-proof relief, avoid the generation of peril;
Claims (10)
1. a sensitive material extrusion molding explosion-proof relief device is characterized in that: comprise open-type machine barrel (1), fluid power system and online monitoring method system (13), be applied to screw extruder (11); Wherein, fluid power system comprises hydraulic cylinder (6), push rod (10), support system and oil piping system (14), support system comprises support column (3), gripper shoe (4) and clamp nut (5), open-type machine barrel (1) comprises open-type machine barrel lower part (1-1) and open-type machine barrel top (1-2), in the bottom of hydraulic cylinder (6) hydraulic cylinder bottom hydraulic fluid port (7) is arranged, at the side of hydraulic cylinder (6) hydraulic cylinder side hydraulic fluid port (8) is arranged; Piston (9) is arranged in hydraulic cylinder (6), and oil piping system (14) comprises oil pump, drive motors and oil pipeline; Support column (3) is fixedlyed connected by clamp nut (5) with gripper shoe (4);
Hydraulic cylinder (6) is fixed by support system, and the piston (9) of push rod (10) one ends is driven and can be moved up and down in hydraulic cylinder (6) by oil piping system, and push rod (10) other end is connected with open-type machine barrel (1); When screw extruder (11) was worked, hydraulic drive system drives push rod (10) compressed two parts in open-type machine barrel lower part (1-1) and open-type machine barrel top (1-2) with the pressure of setting;
Online monitoring method system (13) comprises sensor, input-output system and controller; Controller by the input-output system receiving sensor signal and give fluid power system and send instruction, in the extrusion molding process, when the value of the detection signal of temperature, pressure, moment of torsion or speed exceeds early warning value, controller sends instruction, when screw extruder (11) is shut down, fluid power system work drives push rod (10) pulling open-type machine barrel (1), and two parts in open-type machine barrel lower part (1-1) and open-type machine barrel top (1-2) are separated rapidly;
Oil piping system (14) and online monitoring method system (13) keep apart by the threaded extruder of divider wall (12) (11).
2. a kind of sensitive material extrusion molding explosion-proof relief device according to claim 1, it is characterized in that: the contact plane of two parts in open-type machine barrel lower part (1-1) and open-type machine barrel top (1-2) is smooth.
3. a kind of sensitive material extrusion molding explosion-proof relief device according to claim 1, it is characterized in that: hydraulic cylinder (6) is arranged on the top of open-type machine barrel (1), push rod (10) connects with open-type machine barrel top (1-2), open-type machine barrel lower part (1-1) is fixing, and push rod (10) drives moving up and down of open-type machine barrel top (1-2).
4. a kind of sensitive material extrusion molding explosion-proof relief device according to claim 1, it is characterized in that: hydraulic cylinder (6) is even number, be symmetricly set on the upper and lower of open-type machine barrel (1) respectively, the hydraulic cylinder of top (6) and push rod (10) drive the movement on open-type machine barrel top (1-2), and following hydraulic cylinder (6) and push rod (10) drive the movement of open-type machine barrel lower part (1-1).
5. a kind of sensitive material extrusion molding explosion-proof relief device according to claim 1, it is characterized in that: sensor comprises one or more in pressure sensor, temperature sensor, torque sensor, the velocity sensor, pressure signal in the online real-time detection machine barrel of pressure sensor, the temperature signal of the online real-time detection material of temperature sensor or machine barrel, the torque of the online real-time detection screw extruder of torque sensor (11) screw rod, the speed of the online real-time detection screw extruder of velocity sensor (11) screw rod.
6. a kind of sensitive material extrusion molding explosion-proof relief device according to claim 1 is characterized in that: this device is used for the whole machine barrel of screw extruder (11).
7. a kind of sensitive material extrusion molding explosion-proof relief device according to claim 1 is characterized in that: this device is used for the segment section of the segmentation machine barrel of screw extruder (11).
8. a kind of sensitive material extrusion molding explosion-proof relief device according to claim 1 is characterized in that: the reinforced of screw extruder (11) finished by automatic feeding system.
9. a kind of sensitive material extrusion molding explosion-proof relief device according to claim 1 is characterized in that: this device is applicable to the extrusion molding processing of thermal sensitivity plastics, gunpowder or explosive.
10. explosion-proof relief method of utilizing each described sensitive material extrusion molding explosion-proof relief device of claim 1～9, it is characterized in that: screw extruder barrel adopts the open-type structure in whole or in part in this method, folding by hydraulic drive system drives open-type machine barrel, by the online monitoring method system that matches with it, realize when pressure, temperature, moment of torsion or rotating speed technological parameter reach early warning value, machine barrel being opened rapidly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110035916 CN102173085B (en) | 2011-02-11 | 2011-02-11 | Method and device for extrusion molding and explosion-proof relief of sensitive materials |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110035916 CN102173085B (en) | 2011-02-11 | 2011-02-11 | Method and device for extrusion molding and explosion-proof relief of sensitive materials |
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| CN102173085A CN102173085A (en) | 2011-09-07 |
| CN102173085B true CN102173085B (en) | 2013-10-02 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102990908B (en) * | 2012-11-15 | 2015-02-11 | 西安近代化学研究所 | Pressure and explosion relief device for cylinder body of single screw extruder |
| CN102990900B (en) * | 2012-11-15 | 2015-02-11 | 西安近代化学研究所 | Single screw extruder for forming propellant with high solid content |
| CN102950662A (en) * | 2012-11-29 | 2013-03-06 | 大连橡胶塑料机械股份有限公司 | Gun propellant mixing and extruding device |
| CN105437516A (en) * | 2015-12-15 | 2016-03-30 | 重庆远平汽车配件有限公司 | Computer control system of screw extruder producing vehicle hose |
| CN110936651B (en) * | 2019-11-15 | 2021-04-02 | 莱芜德正环保科技有限公司 | Compressor for industrial waste iron drum |
| CN111229784B (en) * | 2020-03-02 | 2021-05-21 | 刘跃伟 | Forming process and forming equipment of biomass derived fuel (RDF) |
| CN113281485B (en) * | 2021-05-19 | 2023-07-14 | 北京化工大学 | Device and method for evaluating safety of extrusion process of energetic material |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2004042126A (en) * | 2002-07-15 | 2004-02-12 | Mitsubishi Materials Corp | Powder molding method and equipment |
| CN101602259B (en) * | 2009-07-03 | 2011-06-29 | 吉林省吉大机电设备有限公司 | Hydraulic press with automatic weighing device and reciprocating work table |
| CN202016214U (en) * | 2011-02-11 | 2011-10-26 | 北京理工大学 | Anti-explosion pressure-releasing device for extrusion molding of sensitive material |
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